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Transcript
Common Medication Laboratory Monitoring
Based on the CMS State Operations Manual
The Centers of Medicare and Medicaid Services (CMS) has outlined guidance for medication monitoring within
section F-329 Unnecessary Medications in the State Operations Manual. Below is a summary of the recommended
laboratory monitoring parameters for common medications in the geriatric population. Keep in mind this is only a
general guide to monitoring; each care plan will vary depending on the condition and the needs of each individual
resident. Clinically complex residents may require more frequent or additional monitoring, while a stable resident
may require less.
To see the full CMS guidance, please refer to Table 1 in F-329 starting on page 371 in the CMS State Operations
Manual (see references).
Medications
ACE-Inhibitors and ARBs
Labs
Serum potassium
Acetaminophen
Amiodarone
LFTs
LFTs, CBC, TSH
Monitoring Interval
Baseline, within in
first month, and
every 6 months
Every 3 months
Every 6 months
Anticonvulsants:
Carbamazepine
Phenytoin
Phenobarbital
Primidone
Divalproex sodium
Valproic acid
Antidiabetics
Insulin
Oral hypoglycemics
Serum medication levels
Every 6 months
Serum glucose
(point of care),
Hemoglobin A1c
Metformin – monitor serum
creatinine
Antifungals
Imidazoles (systemic)
Increased monitoring
with concomitant drug
use:
 Warfarin (PT/INR)
 Phenytoin (serum
levels)
 Theophylline (serum
levels)
 Sulfonylureas (FBG)
FLP, Hemoglobin A1c
Every 6 months
(A1c); more
frequently for
glucose monitoring
Based on interacting
medications and
clinical conditions
Every 6 months
If used to manage behavior,
stabilize mood, or treat psychiatric
disorders, refer to GDR guidance
Antipsychotics
Monthly Resource / Oct 2015
Comments
Also, monitor serum creatinine
and BUN at initiation and regularly
Only for doses >4 grams/day
Also requires annual eye exam,
EKG, and PFTs
If used to manage behavior,
stabilize mood, or treat psychiatric
disorders, refer to Gradual Dose
Reduction guidance (GDR)
Medications
Digoxin
Labs
Serum digoxin level,
BMP
Monitoring Interval
Every 6 months
Diuretics
BMP
Fibrates
Lithium
CBC, LFTs
Serum lithium level
Within the first
month and every 6
months
Every 6 months
Every 3 months
Nitrofurantoin
Serum creatinine
Prior to initiation
Niacin
LFTs, serum glucose
Every 6 months
Non-Steroidal AntiInflammatory Drugs
Selective Serotonin
Reuptake Inhibitors
CBC, serum creatinine
Every 6 months
Exception: aspirin 81mg daily
Serum sodium
Monitor mood and refer to GDR
guidance as well
Statins
LFTs
Thyroid Medications
Levothyroxine
Liothyronine
Urinary Anti-Infective
TSH, T4
Warfarin
PT/INR
Baseline, dose
increases, and
annually
Baseline, 12 weeks
post-initiation, and
every 6 months
Baseline, at least 6-8
weeks after initiation
or dose changes
Required within 30
days of starting
therapy
Based on clinical
circumstance; at
least every 4 weeks
Key:
BMP: Basic metabolic panel
CBC: Complete blood count
C&S: Culture and sensitivity
FLP: Fasting lipid panel
UA and C&S
Comments
Narrow therapeutic window;
increased monitoring with drug
interactions
Do not use for CrCL <60ml/min
(SOM) or <40ml/min
Monitor FLP for efficacy at least
annually
T3 (instead of T4) should be
monitored for liothyronine
Prophylaxis medication is
discouraged
Checked more frequently with
changes interacting medications
LFTs: Liver function tests
PT/INR: Prothrombin time/International normalized ratio
TSH: Thyroid stimulating hormone
UA: Urinalysis
References:
1. State Operations Manual. Centers of Medicare and Medicaid Services. Available at: https://www.cms.gov/Regulations-andGuidance/Guidance/Transmittals/downloads/R22SOMA.pdf Accessed Sept 2015.
2. Laboratory Monitoring Interval (in Months) Recommended for Chronic Medications, Table 2: Consult Pharm. 2008 May; 23(5):
387–395.
Monthly Resource / Oct 2015